HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: 86fxwg on November 01, 2019, 04:00:15 PM

Title: Converting a 2015 wet head to air
Post by: 86fxwg on November 01, 2019, 04:00:15 PM
My best buddy has had issues with water pumps, 3 to be exact. Now hes got a right fan that's not working. Even though its been covered under extended warranty he's fed up.

? is, Is it possible to shut off the fan monitors in the ECM so no check eng light? Or is the ECM gonna have to be replaced with an air cooled ECM?
Ive wired in a few o2 sensors on older Delphi bike's & turned on the pids for o2 sensors,not sure I can turn off the pids for fans & the pump.

86
Title: Re: Converting a 2015 wet head to air
Post by: PoorUB on November 02, 2019, 07:39:26 AM
The part numbers for the ECM is the same, if that helps. I don't think you can just "flash" an ECM to a different model , wet head to air cooled. Pretty sure Harleys computer wants the VIN to program the ECM.
Title: Re: Converting a 2015 wet head to air
Post by: Coyote on November 02, 2019, 07:44:09 AM
Quote from: PoorUB on November 02, 2019, 07:39:26 AM
The part numbers for the ECM is the same, if that helps. I don't think you can just "flash" an ECM to a different model , wet head to air cooled. Pretty sure Harleys computer wants the VIN to program the ECM.

Pretty sure I can with Techno Research. I would think the dealer can do it as well.

Title: Re: Converting a 2015 wet head to air
Post by: Don D on November 02, 2019, 08:16:44 AM
I has and can be done. Get rid of the water cooled gear and heads then flash it. Done.
Title: Re: Converting a 2015 wet head to air
Post by: rigidthumper on November 02, 2019, 08:23:37 AM
Need an air cooled VIN number, and map. ECM is the same. May be able to over write the VIN, may need a new blank ECM. IDK.
7th digit in the VIN is the engine descriptor. L = 103 twin cooled, M = 103 Air cooled.  Don't think you can change just 1 digit  :idunno:
Title: Re: Converting a 2015 wet head to air
Post by: Thermodyne on November 02, 2019, 08:26:29 AM
Cheaper and less work to just fix it.  Put the late style pump kit on it and fix the fan. 

Those early cooling systems were, ah, lets say buggy.  Or overcomplicated mouse traps build with substandard parts.

The new style system is a lot more dependable.
Title: Re: Converting a 2015 wet head to air
Post by: Pirsch Fire Wagon on November 02, 2019, 09:35:35 AM
Quote from: Coyote on November 02, 2019, 07:44:09 AM
Quote from: PoorUB on November 02, 2019, 07:39:26 AM
The part numbers for the ECM is the same, if that helps. I don't think you can just "flash" an ECM to a different model , wet head to air cooled. Pretty sure Harleys computer wants the VIN to program the ECM.

Pretty sure I can with Techno Research. I would think the dealer can do it as well.

Yup
Title: Re: Converting a 2015 wet head to air
Post by: Pirsch Fire Wagon on November 02, 2019, 09:36:38 AM
Quote from: rigidthumper on November 02, 2019, 08:23:37 AM
Need an air cooled VIN number, and map. ECM is the same. May be able to over write the VIN, may need a new blank ECM. IDK.
7th digit in the VIN is the engine descriptor. L = 103 twin cooled, M = 103 Air cooled.  Don't think you can change just 1 digit  :idunno:

Nope - TR has all the Maps - May have to use Direct Tune to Flash.

If you need a Map let me know.
Title: Re: Converting a 2015 wet head to air
Post by: 86fxwg on November 02, 2019, 10:27:37 AM
Bikes tuned with TTS, Can TTS shut off those pids?

Quote from: Thermodyne on November 02, 2019, 08:26:29 AM
Cheaper and less work to just fix it.  Put the late style pump kit on it and fix the fan. 

Those early cooling systems were, ah, lets say buggy.  Or overcomplicated mouse traps build with substandard parts.

The new style system is a lot more dependable.

Nope he's done with the Wet head!
We either 86 the wet heads or the bikes traded.

So i'm crystal clear, the dealer can flash & install his custom tune & shut the pids off on his ECM for the pump & fan drivers?

86
Title: Re: Converting a 2015 wet head to air
Post by: Coyote on November 04, 2019, 04:46:05 AM
I'm pretty sure your only options for reflashing the ECM to a different model is to use Dig Tech or TR Centurion/Direct Link.
Title: Re: Converting a 2015 wet head to air
Post by: rigidthumper on November 04, 2019, 05:15:26 AM
"Bikes tuned with TTS, Can TTS shut off those pids?"
No, AFAIK no product has that capability.  The software has a completely different set of parameters ( sensor readings, engine temp calcs, checking for resistance feedback, codes, etc) for twin cooled and oil cooled. The background info for the map needs to be either for a twin cooled or an oil cooled model.
Title: Re: Converting a 2015 wet head to air
Post by: cherryseeg2 on November 04, 2019, 08:12:18 AM
All you have to do is flash the appropriate map, I know Power Vision will flash a wethead map into an oil cooled bike and it will run fine with only a check eninge light. So flashing the other way should be the same and once the coolant system and sensors are removed there should be no CEL.
Title: Re: Converting a 2015 wet head to air
Post by: flhxi2go on November 04, 2019, 10:34:28 AM
I just finished doing this with TTS . you have to leave all sensors hooked up, or it sets a check engine light
Quote from Steve Cole (Paul

We have never had one here to build a custom calibration for. What I would suggest is that you measure the parts with an Ohm meter that have been removed and just put resistors back in there place. I think there is just the water pump and coolant sensor in the left radiator that you would need to fool with the resistors. That way the ECM see the parts as being installed, even though they are not and just tune as normal.)
Title: Re: Converting a 2015 wet head to air
Post by: cheech on November 04, 2019, 11:50:40 AM
Quote from: Coyote on November 04, 2019, 04:46:05 AM
I'm pretty sure your only options for reflashing the ECM to a different model is to use Dig Tech or TR Centurion/Direct Link.
Or if he wanted go with a Thundermax ECM? Get rid of the Delphi ECM.
Title: Re: Converting a 2015 wet head to air
Post by: 1workinman on November 18, 2019, 05:09:57 PM
Quote from: 86fxwg on November 01, 2019, 04:00:15 PM
My best buddy has had issues with water pumps, 3 to be exact. Now hes got a right fan that's not working. Even though its been covered under extended warranty he's fed up.

? is, Is it possible to shut off the fan monitors in the ECM so no check eng light? Or is the ECM gonna have to be replaced with an air cooled ECM?
Ive wired in a few o2 sensors on older Delphi bike's & turned on the pids for o2 sensors,not sure I can turn off the pids for fans & the pump.

86
Maybe he could just trade the bike in on some thing else . I not sure I want a m8 yet until I was damn sure problems fixed may be they have
Title: Re: Converting a 2015 wet head to air
Post by: Smarty on November 18, 2019, 07:06:47 PM
With Direct Link, just remove all related Wethead stuff, heads, water pump, etc. and just flash to desired air cooled tune. We've done it multiple times with no trouble codes related to wet head. Easy, peasy!